import {getLyric} from 'api/song'
import {ERR_OK} from 'api/config'
import {Base64} from 'js-base64'

export default class Song {
    constructor({id, mid, singer, name, album, duration, image, url}) {
      this.id = id
      this.mid = mid
      this.singer = singer
      this.name = name
      this.album = album
      this.duration = duration
      this.image = image
      this.url = url
      
    }
    getLyric(){
      if (this.lyric){
        return Promise.resolve(this.lyric)
      }
      return new Promise((resolve,reject) =>{
          getLyric(this.mid).then(res=>{
            if(res.retcode==ERR_OK){
              this.lyric=Base64.decode(res.lyric)
              resolve(this.lyric)
            } else {
              reject('no lyric')
            }
         })
      })
    }

}
export function createSong(musicData,songVkey) {
    return new Song({
      id: musicData.songid,
      mid: musicData.songmid,
      singer: filterSinger(musicData.singer),
      name: musicData.songname,
      album: musicData.albumname,
      duration: musicData.interval,
      image: `https://y.gtimg.cn/music/photo_new/T002R300x300M000${musicData.albummid}.jpg?max_age=2592000`,
      url: `http://dl.stream.qqmusic.qq.com/C400${musicData.songmid}.m4a?vkey=${songVkey}&guid=6319873028&uin=0&fromtag=66`
    })
  }
  
export function filterSinger(singer) {
    let ret = []
    if (!singer) {
      return ''
    }
    singer.forEach((s) => {
      ret.push(s.name)
    })
   
    return ret.join('/')
  }
  export function creatSongList (musicData, songVkey) {
    return new Song({
           id: musicData.id,
           mid: musicData.mid,
           singer: filterSinger(musicData.singer),
           name: musicData.name,
           album: musicData.albumname,
           duration: musicData.interval,
           image: `https://y.gtimg.cn/music/photo_new/T002R300x300M000${musicData.album.mid}.jpg?max_age=2592000`,
           //注意guid以实时数据为主
           url: `http://ws.stream.qqmusic.qq.com/C400${musicData.mid}.m4a?vkey=${songVkey}&guid=6319873028&uin=0&fromtag=66`
   })
}